I've been using azelaic acid cream at a 20% concentration for several months now, and it has truly transformed my skin. Starting with a low frequency of application—about every other night—helped my skin build tolerance without irritation. Azelaic acid is fantastic because it gently tackles acne, reduces redness, and improves overall skin tone without the harshness of some other treatments. One thing I highly recommend is to apply it after cleansing and toning, but before heavier moisturizers or oils. This ensures that the product absorbs well and can exert its benefits directly on the skin. I also found that combining azelaic acid with a hydrating serum or moisturizer helps to prevent dryness and maintain the coveted glass skin effect. Additionally, since azelaic acid can increase sun sensitivity, I never skip sunscreen during the day—it’s crucial for protecting your skin and maintaining the results. Patience is key; it may take 4 to 6 weeks to notice significant improvements, but consistent use really pays off. Incorporating azelaic acid into a balanced skincare routine that includes gentle cleansing, proper hydration, and sun protection has worked wonderfully for me. If you’re aiming to achieve smoother, more radiant skin, I encourage you to give azelaic acid cream 20% a try and tailor the frequency according to your skin's needs.